- The coolant flow is routed through the heater core to produce warm air for the vehicles heater T or F
2. The mixture of anti freeze to water should contain at least____% antifreeze but not more than ____% antifreeze
3. The device used to test coolant is called a ________
4. The coolant should be drained flushed and refilled how often?
- 50, 70
- Depends on car and coolant (owner’s manual)